22457509 has 2 divisors, whose sum is σ = 22457510. Its totient is φ = 22457508.

The previous prime is 22457497. The next prime is 22457521. The reversal of 22457509 is 90575422.

It is a balanced prime because it is at equal distance from previous prime (22457497) and next prime (22457521).

It can be written as a sum of positive squares in only one way, i.e., 19492225 + 2965284 = 4415^2 + 1722^2 .

It is a cyclic number.

It is not a de Polignac number, because 22457509 - 2⁹ = 22456997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22457549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11228754 + 11228755.

It is an arithmetic number, because the mean of its divisors is an integer number (11228755).

Almost surely, 2^22457509 is an apocalyptic number.

It is an amenable number.

22457509 is a deficient number, since it is larger than the sum of its proper divisors (1).

22457509 is an equidigital number, since it uses as much as digits as its factorization.

22457509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 22457509 is about 4738.9354289756. The cubic root of 22457509 is about 282.1329830683.

The spelling of 22457509 in words is "twenty-two million, four hundred fifty-seven thousand, five hundred nine".